Analysis of process and key points for crystallization control of WPA production with hemihydrate-dihydrate process
With the rise of new energy industry,the demand for phosphoric acid is increasing.The hemihydrate-dihydrate WPA production process has been included in the national green development list with the good economic and technical indicators and energy-saving and emission reduction effects.By analyzing the reaction mechanism of the hemihydrate-dihydrate WPA process,a high-level flash cooling process is proposed to reduce the slurry temperature and save equipment costs.At the same time,the key control points in the production process of hemihydrate-dihydrate WPA are analyzed,and an innovative approach is proposed to use a particle size distribution analyzer to analyze the crystallization characteristics of phosphogypsum in the WPA production process.This has guiding significance for regulating the long-term stable operation of hemihydrate-dihydrate WPA plants.
wet-process phosphoric acid(WPA)hemihydrate-dihydrate processhigh level flash coolingcrystallizationindicator control
NETL
NSTL
万方数据
